datapath: Define kmemdup() for kernels older than 2.6.19

[sliver-openvswitch.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 23097b2..64384d9 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -162,6 +162,8 @@ AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [
                   [OVS_DEFINE([HAVE_NLA_GET_BE16])])
   OVS_GREP_IFELSE([$KSRC26/include/linux/in.h], [ipv4_is_multicast],
                   [OVS_DEFINE([HAVE_IPV4_IS_MULTICAST])])
+  OVS_GREP_IFELSE([$KSRC26/include/linux/string.h $KSRC26/include/linux/slab.h],
+                  [kmemdup], [OVS_DEFINE([HAVE_KMEMDUP])])
   # Check for the proto_data_valid member in struct sk_buff.  The [^@]
   # is necessary because some versions of this header remove the
   # member but retain the kerneldoc comment that describes it (which